Brush Research Flex-Hone Cylinder Hone Tool - 9mm (.354") Diameter, 320 Grit Silicon Carbide For Engine Deglazing

This isn't your average honing tool.

The Brush Research Flex-Hone (often called a ball hone or glaze breaker) is a flexible abrasive brush designed specifically for finishing cylinder walls.

This model is for a 9mm (.354 inch) diameter bore and uses a 320 grit Silicon Carbide abrasive.

Its genius is in its design: it's self-centering, self-aligning, and wears evenly, so you don't need to be a master machinist to use it.

It creates the perfect cross-hatch oil-holding pattern on cylinder walls, which is crucial for proper piston ring seating and engine performance.

It's not just for car engines though – it's amazing for deburring cross-drilled holes, finishing firearm chambers, air compressor cylinders, pump bodies, valve guides, and tons of other cylindrical applications.

You can use it by hand with a drill or even in CNC equipment.

It's durable, effective, and a must-have tool for any serious mechanic, gunsmith, or machinist's workshop.

Saves a ton of time and does a professional-grade job.